Little Colorado Nine Bin Toy Organizer, Unfinished The 12mm Baltic birch plywood that we use is very high quality 11 veneer plywood It is also available with an optional stacking bracket that allows one organizer to be safely stacked on top of another This allows for a maximum storage capacity of 18 bins Sanded and ready to finish Six quart bin size is 14 1/2" x 8" x 4 5/8"